Stop mechanism for frictional gearing.



N0. 648,202. Patented Apr. 24, I900.

R. A. HALL.

STOP MECHANISM FOR FRICTIONAL GEARING.

(Application filed Feb. 11, 1898.)

2 Sheets-Sheet (No Model.)

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N0. 648,202. Patnted Apr. 24, I900. I

R. A. HALL. STOP MECHANISM FOR FRICTIONAL GEABING.

(Application filed Feb. 11, 1898.)

2 Sheets-Sheet 2.

(No Model.)

OQMZJW.

-WITNESEE7 accompanying drawings, forming-apart here- T0 (4% whom it may concern:

'NITED STATES ATENT Fries.

ROBERT ALLISOIQ HALLyOF BALTIMORE, MARYLAND.

sTo P MECHANISM FOR FRICTIONAL IGYEARING.

SPECIFICATION forming part of Letters Patent No. 648,202, dated April 24, 1900.

' Ap licant]: filed February 11,1898. Serial No. 669,939. (No model.)

Be it known that 1, ROBERT ALLISON HALL,

of the city of Baltimore, in the State of Maryland, have invented certain Improvements in Stop Mechanism for Frictional Gearing, -of which the following is a specification.

This invention relates to an'improved stop mechanism for frictional gearing, embracing as an element thereof a treadle or some other equivalent actuating device, whereby upon the treadle being depressed a shaft forming a part of a machine is made to performone com plete and exact revolution and then stop until the treadle is again depressed, as wi1lherein-' after fully appear.

In the furtherdescription of the said in ven-v tion which follows reference is made to the of, and in "which Figure 1 isa' partly-sectional side view of a bottle-sealing machine to which is applied the improved stop mechanism. Figs. 2 to 8, in-

clusive, areenlarged details of the machine.

on the same scale as Fig. 1.

The machine for sealin g bottles, the principal parts of which are herein shown, is of the same character as that illustrated and described in the application of Albert A. Carper, Serial No. 661,634, filed December 18, 1897, and its representation herein is for the pur- Figs. 9, 10, and 11 are detailsof the machine pose of illustrating one of the many uses to which the presentinvention may be applied.

Referring now to the drawings, A is the frame of the bottling-machine, consisting in the present case of the columnar stand aand the base I).

B is the main shaft of the machine, which has to be operated by the clutch mechanism from the driving-shaft O.

The driving-shaft O is seated in a bearingboX in two parts, which consist of the stationary orfixed portiond and the removable cap 0.

The main driving-shaft B revolves in a sleeve E, formed, preferably, as a part of a plate F, secured to the faceof a lateral extension f of the base I).

G and H are interlocking grooved frictionwheels, the former and smaller one being fastened to the driving-shaft O and the latter to the main shaftB of the bottling-machine. The driving-pulley is denoted by I.

The crank-pin,which operates the bottling machine and which is represented byJ, is secured to the driven friction-wheel I-I. '(See Fi .1.) w f Referring to Figs. 6, 7, and 8, which are respectively apartly-setztionalside View of the.

two friction-wheels, with a portion of their shafts, a face view of the two wheels, and a top view .of the lower friction-wheel, it will be seen that in the driven wheel'is a: cavity of tion-wheel be turned sufficiently to establish contact between itand the driver the latter cannot be revolved without communicating a corresponding movement to the driven wheel,

. which movement is continued until the cavity is again brought to its first position or the one shown particularly in Fig. 7. In the machine shown the driving friction -wheel is in constant revolution and communicates motion to the driven one, H, until the cavity in that wheel effects the disconnectionbefore described.

The means employed to turn the driven friction-wheel H sufficiently to establish contact between it and the driver when they are disconnected consist, preferably, in a pin K, which projects from. the rear face of the driven wheel, a treadle L, and a hook M,L hinged .to the treadle and adapted to connect With the said pin, as shown in Fig. 4 in full lines and in Fig. 5 in dottedlines. Aspring 1 h, situated in a hole in the treadle, bears against the hookM at a point a short distance above thefulcrnm'j and serves to yieldingly'retain the said hook in the position shown in Figs. 4 and 5. .The'upper end of the hook M is angular, so as to present an inclined surface to the pin K when the same is above the hook for a purpose hereinafter. described.

By reference to Fig. 2, which is a plan of a portion of the base b, it will be seen that the treadle,w hich is shown mainly in dotted lines, has its fulcrum at one side thereof and is provided with an armlato which the hook M is connected, and it is in this portion of the treadle that the spring before referred to is situated. A spiral spring unites the treadle the end of which is adapted to fit in the said notch. The office of these devices is to insure the stoppage of the driven friction-wheel as soon as its cavity :is adjacent to the driving-wheel, as shown in Fig. 7.

To insure a close-contact of the driven friction-wheel H with the driver G, I make the sleeve E, carrying themain shaft B, adjustable in height by slotting the holes p in the plate F, through which pass the holding-bolts q, and providing the overhanging portion of the plate F with set-screws i, which bear on the upper surface of the fixed portion of the bearing-box. By setting up these screws the main shaft is raised and the driven frictionwheel forced against the drivingone. After this adjustment the holding-bolts are tightened.

Supposing the drivingshaft to be in revolution and the driven friction-wheel in the position shown in Fig.7, no movement is communicated to the said wheel and the machine to which the friction mechanism is applied is motionless.

hen it is desired to put the machine in operation, the attendant bears down on the treadle, and the driven friction Wheel is slightly turned through the medium of the hook M. The moment that contact between the two clutch-Wheels is established the main shaft is revolved until the cavity in the driven one arrives at its original position, when it stops, the driven friction-wheel, with its shaft, having made one complete revolution. The momentum of the working parts of the machine have a-tendency to carry the driven friction-wheel past the stopping-point, and it is to counteract this tendency that the springheld bolt Q and its disk P are used, they forming a stop which is effective for the purpose in view, while they donot interfere with the movement of the driven friction-wheel effected by the foot of the operator, as before described, to again put the machine in operation. Before a second revolution of the driven friction-wheel can be made it is necessary that the operator should release the treadle, so as to allow the hook M to come to such position as will admit of its engagement with the pin K, and it is to allow of this reengagement that the upper end of the said hook is inclined, so that the said hook is deflected from a vertical position when struck by the pin K.

The friction apparatus described is well adapted to a machine for sealing bottles, as

it is necessary or preferred that there should be a pause or stoppage of the working parts of the machine to enable the operator to remove a sealed bottle and replace it with an unsealed one; but it is evident that the said apparatus is equally as Well adapted to a Variety of machines for other purposes where a continuous revolution of a shaft is not required.

While a treadle is described as the means for effecting the operation of the hook M, it will be understood that the said hook could be operated by a hand-lever or other equivalent device.

I claim as my in'vention- 1. In a stop mechanism for frictional gearing, one friction member thereof having a 2. In a stop mechanism for frictional gearing, the combination of two peripherallygrooved clutch-wheels, which consist of a driving and a driven member, the driven member having a cavity in its c'ircu inference,

a pin in the face of the driven friction-Wheel, a treadle, and a detachable hook to connect the treadle with the said pin, substantially as, and forthe purpose specified.

3. In a stopmechanism for frictional gearing, one friction wheel or member thereof having a cavityin its circumference whereby in a certain relative position of the twomembers, frictional contact between them is destroyed, combined with mechanism which is independent of the driving member to effect a slight circumferential movement of the driven member, and stopping devices to temporarily hold. the driven member from contact with the driving one, substantially as specified.

ROBERT ALLISON HALL Witnesses:

WM. '1. HOWARD, DANL. FISHER. 

